code: def negate(grads):
      """Negates the gradients.
  
      Args:
          grads: A numpy array of grads to use.
  
      Returns:
          The negated gradients.
      """
      return -grads
  
file_path: keras-vis/vis/grad_modifiers.py
imports: from __future__ import absolute_import
  import numpy
  from keras import backend
  from .utils import utils
label_desc: Use image node_id 1 for calling a global function with example usage: negate(grads) and returns: unknown